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The air intake coupling is sized for 2² PVC pipe.
Install the combustion air pipe to the air intake coupling using RTV
sealant to provide for future serviceability.
Vent Pipe Connection
Install the vent pipe grommet to the furnace panel. Locate the
grommet in the furnace panel at a location directly away from the
vent fitting on the combustion blower. The grommet snaps into the
3² hole plug from the furnace panel. NOTE: Depending on the
installation position, the vent pipe grommet will be installed to the
top panel or to the alternate location on the side panels. If needed,
remove the 3² hole plug from the furnace panel and relocate to the
open hole in the furnace panel. (See Figure 8 or Figure 17)
Install the vent pipe to the rubber coupling, the vent fitting or the
PVC vent extension pipe. Securely attach using the clamp or PVC
cement as required.
Note: The vent fitting MUST be installed with the air flow mark-
ing arrow pointed toward the vent pipe. (See Figure 18)
Some installations require the vent fitting to be installed with
a 5° ° ° ° to 10° ° ° ° downward slope. (See Figure 8 thru Figure 17)
Proper Sealing Procedure for
Figure 18
Rubber Coupling
& Clamps
NOTE: The 90° elbow is approved
Vent Pipe
for use inside the furnace ONLY.
90° ° ° ° Elbow
Vent Extension
Pipe (Side Panel
Exit)
SIDE VIEW
Rotate downward
Tee
5° ° ° ° to 10° ° ° °
NOTE: Built--in channel will be angled 5° to 10° also.
Joining Pipe and Fittings
!
FIRE HAZARD
Failure to do so may cause personal injury and/or property
damage.
Observe all cautions and warnings printed on material
containers
Provide adequate ventilation and do NOT assemble near
heat source or open flame. Do NOT smoke while using
solvent cements and avoid contact with skin or eyes.
This furnace is approved for venting with Schedule 40 PVC, CPVC,
ABS, Cellular Core pipe fittings and SDR--26 PVC.
440 01 1020 02
Combustion Blower
Vent Pipe
(Top Panel Exit)
Vent Fitting
& Clamps
Combustion
Blower
25--24--14a
NOTE: All PVC, CPVC, ABS, and Cellular Core pipe fittings, sol-
vent cement, primers and procedures MUST conform to American
National Standard Institute and American Society for Testing and
Materials (ANSI/ASTM) standards.
·
Pipe and Fittings -- ASTM D1785, D2241, D2466, D2661,
D2665, F--891, F--628
·
PVC Primer and Solvent Cement -- ASTM D2564
·
Procedure for Cementing Joints -- Ref ASTM D2855
NOTE: In order to create a seal that allows future removal of pipe,
RTV sealant MUST be used on the inlet pipe where it joins to the
furnace. PVC, CPVC, ABS, and Cellular Core pipe and cement
may be used on all other joints.
CAUTION
!
Do NOT use solvent cement that has become curdled,
lumpy or thickened and do NOT thin. Observe
precautions printed on containers. For applications
below 32° F., use only low temperature type solvent
cement.
1.
Cut pipe end square, remove ragged edges and burrs.
Chamfer end of pipe, then clean fitting, socket and pipe joint
of all dirt, grease, or moisture.
NOTE: Stir the solvent cement frequently while using. Use a natu-
ral bristle brush or the dauber supplied with the cement. The proper
brush size is one inch.
2.
After checking pipe and socket for proper fit, wipe socket
and pipe with cleaner-primer. Apply a liberal coat of primer to
inside surface of socket and outside of pipe. Do NOT allow
primer to dry before applying cement.
3.
Apply a thin coat of cement evenly in the socket. Quickly ap-
ply a heavy coat of cement to the pipe end and insert pipe
into fittings with a slight twisting movement until it bottoms
out.
NOTE: Cement MUST be fluid while inserting pipe. If NOT, recoat
pipe.
4.
Hold the pipe in the fitting for 30 seconds to prevent the ta-
pered socket from pushing the pipe out of the fitting.
5.
Wipe all excess cement from the joint with a rag. Allow 15
minutes before handling. Cure time varies according to fit,
temperature and humidity.
Connecting Vent Pipes and Termination
NOTE: Combustion air intake and vent MUST terminate in the
same atmospheric pressure zone. If installation is in a cold climate
(sustained temperatures below 0°F), increase the minimum dis-
tance between vent pipe and air intake from 8² to 18².
CAUTION
!
Maintain a minimum of 36² between combustion air inlet
and clothes dryer vent. Terminate the combustion air
intake as far as possible from any air conditioner, heat
pump, swimming pool, swimming pool pumping,
chlorinator or filtration unit.
!
CARBON MONOXIDE POISONING HAZARD
Failure to properly vent this furnace can result in death,
personal injury and/or property damage.
1.
Install all couplings, nipples and elbows using proper proce-
dures for Joining Pipe and Fittings and maintain spacing
between vent and combustion air piping as indicated in
Figure 19 through Figure 27 .
23
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